Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling

The bi-reforming of methane (BRM) has the advantage of utilising greenhouse gases and producing H rich syngas. In this work Ni stabilised in a pyrochlore-double perovskite structure is reported as a viable catalyst for both Dry Reforming of Methane (DRM) and BRM. A 10 wt.% Ni-doped LaZrO pyrochlore...

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Autores: Saché, E. le, Pastor-Pérez, Laura, Garcilaso, Victoria, Watson, David J., Centeno, Miguel Ángel, Odriozola, José Antonio, Ramírez-Reina, Tomás
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/199825
Acceso en línea:http://hdl.handle.net/10261/199825
Access Level:acceso abierto
Palabra clave:Pyrochlore
Bi-reforming of methane
Dry reforming of methane
Ni catalyst
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spelling Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recyclingSaché, E. lePastor-Pérez, LauraGarcilaso, VictoriaWatson, David J.Centeno, Miguel ÁngelOdriozola, José AntonioRamírez-Reina, TomásPyrochloreBi-reforming of methaneDry reforming of methaneNi catalystThe bi-reforming of methane (BRM) has the advantage of utilising greenhouse gases and producing H rich syngas. In this work Ni stabilised in a pyrochlore-double perovskite structure is reported as a viable catalyst for both Dry Reforming of Methane (DRM) and BRM. A 10 wt.% Ni-doped LaZrO pyrochlore catalyst was synthesised, characterised and tested under both reaction conditions and its performance was compared to a supported Ni/LaZrO. In particular the effect of steam addition is investigated revealing that steam increases the H content in the syngas but limits reactants conversions. The effect of temperature, space velocity and time on stream was studied under BRM conditions and brought out the performance of the material in terms of activity and stability. No deactivation was observed, in fact the addition of steam helped to mitigate carbon deposition. Small and well dispersed Ni clusters, possibly resulting from the progressive exsolution of Ni from the mixed oxide structure could explain the enhanced performance of the catalyst.Elsevier BVConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020192020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_dcae04bcPublisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/199825reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.cattod.2019.05.039Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1998252026-05-22T06:33:51Z
dc.title.none.fl_str_mv Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
title Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
spellingShingle Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
Saché, E. le
Pyrochlore
Bi-reforming of methane
Dry reforming of methane
Ni catalyst
title_short Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
title_full Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
title_fullStr Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
title_full_unstemmed Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
title_sort Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
dc.creator.none.fl_str_mv Saché, E. le
Pastor-Pérez, Laura
Garcilaso, Victoria
Watson, David J.
Centeno, Miguel Ángel
Odriozola, José Antonio
Ramírez-Reina, Tomás
author Saché, E. le
author_facet Saché, E. le
Pastor-Pérez, Laura
Garcilaso, Victoria
Watson, David J.
Centeno, Miguel Ángel
Odriozola, José Antonio
Ramírez-Reina, Tomás
author_role author
author2 Pastor-Pérez, Laura
Garcilaso, Victoria
Watson, David J.
Centeno, Miguel Ángel
Odriozola, José Antonio
Ramírez-Reina, Tomás
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Pyrochlore
Bi-reforming of methane
Dry reforming of methane
Ni catalyst
topic Pyrochlore
Bi-reforming of methane
Dry reforming of methane
Ni catalyst
description The bi-reforming of methane (BRM) has the advantage of utilising greenhouse gases and producing H rich syngas. In this work Ni stabilised in a pyrochlore-double perovskite structure is reported as a viable catalyst for both Dry Reforming of Methane (DRM) and BRM. A 10 wt.% Ni-doped LaZrO pyrochlore catalyst was synthesised, characterised and tested under both reaction conditions and its performance was compared to a supported Ni/LaZrO. In particular the effect of steam addition is investigated revealing that steam increases the H content in the syngas but limits reactants conversions. The effect of temperature, space velocity and time on stream was studied under BRM conditions and brought out the performance of the material in terms of activity and stability. No deactivation was observed, in fact the addition of steam helped to mitigate carbon deposition. Small and well dispersed Ni clusters, possibly resulting from the progressive exsolution of Ni from the mixed oxide structure could explain the enhanced performance of the catalyst.
publishDate 2019
dc.date.none.fl_str_mv 2019
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_dcae04bc
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/199825
url http://hdl.handle.net/10261/199825
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.cattod.2019.05.039
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,811543

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